正弦函数的对称中心怎么求

请问您My eyes are black.为什么用are而不用is谢谢 Mr black( )angrywitj his computer 用am is are 填空 Server Error in '/' Application.--------------------------------------------------------------------------------Runtime Error Description:An application error occurred on the server.The current custom error settings for this application prevent the d “一日之计在于晨,一年之计在于春”的作者是谁?出自哪里? 一年之计在于春一日之计在于晨出自哪位名人之口 一年之计在于春 一日之计在于晨是谁写的 I like to know how to import fruit to China.Can you please E-mail me your E-mail address and cell phone number.I will call you. I’d like to know______ ______ ______ ______ _______ _______ these materials.(我想知道这些材料能作什么用.） I'd like to go 和i'd like to I'd like to know __ chinses.A.when he began to learnB.when did he begin to learnC.when did he begin learning D.for how long he begian to learn This is his computer.写一问句,使原句成答句 1.Look!they are laughing __ （happy）2.We students can study in the classroom in __ (silent) without teachers3.The teacher said ,"Don't cheat in exam ,children"（改为间接引语）4."Are you going to visit Zi Gong next Week " father asked me look!they are smiling___(happy） 一字开头的成语汇集? 带*字的成语集锦比如说：带花字的成语走马观花 柳绿花红 .越多越好 含有“一”字的成语 ! 英语翻译把这句话翻译成英语（机器免进） 疯狂猜图 求 知识与实践相结合的成语 比喻各种各样的知识汇集的成语有哪些 there was some difficulty in explaining this to the Swede 中 in explaining this to the Swede 做定语还是状语 英语翻译如题哦...一定要两个"这样"! the jacket is black .组成一句话 disclose和reveal有什么区别? reveal 与disclose 与 divulge三者的区别可从多种角度 阐述,个人感觉还是那些 专属例句 更有说服力!如果有很好的角度解释清楚 就太好了 xiexiexiexie Reveal和disclose和uncover区别用法 ____was the weather like yesterday?A How BWhat CWhat a D How a expose与disclose的区别expose与disclose有什么区别?语境和语法上 optional tagline中文翻译是什么 we can （ ）some english now a say b speak c tell I can say some English.改为否定句 选择 I am Daming.I＿＿＿like football.A.don't B.doesn't C.am